Today’s H-alpha image of the solar disk shows a striking prominence along the SE solar limb. Other prominences along the NW and SW limbs are also visible. I have labeled active region AR4002 manifest by its associated bright plage because it is not visible on the sunspot image.
The sunspot image shows the groups that we saw yesterday albeit having progressed toward the western limb. Neither AR4002 (annotated in the H-alpha image) nor AR4005 are visible in my image, but I expect that they would be visible in larger instruments than mine. The spot above AR4004 appears annotated as AR4007 in today’s NASA image.
The prominences appear below in today’s prominence gallery. The most spectacular is the one along the sun’s E-SE limb.
